MIL-DTL-16685E
3.2.1.1 Piece1. Piece 1 shall be made of packing conforming to class 1, composition A, as
shown on figures 1, 2, and 3.
3.2.1.2 Piece 2. Piece 2 shall be made of packing conforming to class 1, composition B,
which may be made in one continuous piece in the form of a tight helix, or may be cut into
individual rings (see figures 1, 2, and 4). If made of individual rings, the cuts shall be displaced
approximately 90 degrees from the cuts in the adjoining rings. The cut in each top and bottom
retainer rings shall be similarly displaced from the cut in the adjoining sealing component.
3.2.2 Coating. After molding, packing shall receive a thin coat of a suitable quick drying
resin preparation. The coating shall be of such a nature that it will in no way affect the sealing
properties of the class 1, composition B packing, when tested as specified in 4.4.
3.2.3 Sizes. Packing shall be of the sizes shown in table I and as specified (see 6.2).
Table I - Sizes.
Dimensions
1/
Size
h-I
h-IA
h-II
inside
outside
d
diameter
diameter
(type I)
(type IA)
(type II)
Inch
Inches
Inches
Inches
Inches
Inches
.375
.750
3/16 (.188)
A
.480
.875
3/16 (.188)
B
.610
1.000
3/16 (.188)
C
1.375
1.375
1.125
.719
1.125
3/16 (.188)
D
± .063
± .063
± .063
.778
1.125
3/16 (.188)
E
.812
1.187
3/16 (.188)
F
.911
1.375
1/4 (.250)
G
1.037
1.500
1/4 (.250)
J
1.120
1.625
1/4 (.250)
K
1.232
1.687
1/4 (.250)
L
1.375
1.875
1/4 (.250)
M
1.688
2.625
1.375
± .063
± .094
± .063
1.474
1.937
1/4 (.250)
N
1.586
2.062
1/4 (.250)
P
1.681
2.187
5/16 (.313)
R
1.820
2.562
3/8 (.375)
S
2.030
2.750
3/8 (.375)
T
2.142
2.875
3/8 (.375)
V
4.625
2.125
2.563
2.280
3.000
3/8 (.375)
W
± .125
± .094
± .094
2.427
3.125
3/8 (.375)
X
2.545
3.250
3/8 (.375)
Y
2.673
3.437
3/8 (.375)
Z
1/ Minimum diameter of size of piece 1 before molding.
3
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